7689691 has 4 divisors (see below), whose sum is σ = 7695400. Its totient is φ = 7683984.

The previous prime is 7689667. The next prime is 7689707. The reversal of 7689691 is 1969867.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1969867 = 67 ⋅29401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7689691 is a prime.

It is a Duffinian number.

7689691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7689631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415 + ... + 3943.

It is an arithmetic number, because the mean of its divisors is an integer number (1923850).

Almost surely, 2^7689691 is an apocalyptic number.

7689691 is a deficient number, since it is larger than the sum of its proper divisors (5709).

7689691 is a wasteful number, since it uses less digits than its factorization.

7689691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5708.

The product of its digits is 163296, while the sum is 46.

The square root of 7689691 is about 2773.0292100878. The cubic root of 7689691 is about 197.3799173891.

The spelling of 7689691 in words is "seven million, six hundred eighty-nine thousand, six hundred ninety-one".